Fact-Checked·Verified against peer-reviewed sources · Last updated Oct 24, 2026·For research use only - not for human consumption
CognitiveEmerging Research

P21

Also known as: p21 peptide · cilliary neurotrophic factor analogue · CNTF peptide

For in-vitro (laboratory) research purposes only. Not for human or animal consumption.

Available Forms

InjectableNasal SprayOral

Research Applications

Cognitive EnhancementNeuroprotection

Check independent lab results, free

Finnrick Analytics publishes independent lab test results for peptide products from named vendors, and anyone can check the published results for free.

For in-vitro research use only. Not for human consumption.

1What Is P21?

CNTF-derived peptide studied for neurogenesis, BDNF elevation, and cognitive enhancement.

4Published Research - Plain English Summaries

The studies below have been published in peer-reviewed journals. Summaries are written in plain language - no jargon. Citations are provided as text only.

other

Senthil A, Ramya K, Bharanidharan T · 2027 · Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy · PMID 42815311

animal study

Feng T, Li J, Jia Y, Tao Y, Xu J · 2026 · Zhen ci yan jiu = Acupuncture research · PMID 42908455

other

Babu G, Azad MGG, Joubert M, Richardson DR · 2026 · Biochimica et biophysica acta. Molecular basis of disease · PMID 42906794

other

Hao S, Niu YF, Si MC, Zheng WX, Zhao CG, Li X, Wang R, Yan JH, Cai ZH, Cai S, Yue JY, Zhang TJ · 2026 · European journal of medicinal chemistry · PMID 42800115

animal study

Sanches E, Schirmbeck G, Mairesse J, Ho D, Dennez C, Baud O, Sizonenko S · 2026 · NeuroImage · PMID 42869199

other

Vuillemenot LA, Morales LG, Dragoi CM, Pennycook BR, Harris E, Lin LC, Weston WA, Brown JE, Graham E, Moulin L, Andrew I, Roumelioti G · 2026 · Nature · PMID 42907504

animal study

Yin Q, Cui K, Lu T, Zheng D, Gu H, Yang X, Mayo KH, Cheng H, Zhou Y, Cui S · 2026 · Carbohydrate polymers · PMID 42785875

in vitro study

Gerges MN, Noser AA, Ibrahim EG, Diab T · 2026 · Bioorganic & medicinal chemistry · PMID 42784856

other

Li Y, Zhang Z, Li D, Zhou C, Chen Y, Zhu C, Yang J, Tang R, Wang W, Yu X, Xu J · 2026 · Translational oncology · PMID 42767098

other

Capener JL, Badillo-Martinez A, Awada B, Davis-Gilbert ZW, Kramer TW, Blair CS, Bashore FM, Al-Ali H, Axtman AD · 2026 · ACS chemical neuroscience · PMID 42904645

Buy P21 - Verified Vendors(4 vendors)

The vendors below are affiliate partners of Peptide Stores Online. Each listing links to the vendor's own website, where ordering, payment, and delivery are handled by the vendor.
GenX Peptides1 listing

P21 (P021) 5mg

LabFirst Peptides1 listing

P21 (P021) 5mg

Peptuvia1 listing
American Peptides1 listing

P-21 · 5mg

All content on this page is for in-vitro research purposes only. Not intended for human or animal use. Consult a licensed professional before handling research chemicals. No content on this page constitutes medical advice or a treatment recommendation.

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